Which winding in a transformer is stationary?

In a transformer, the stationary winding is known as the series winding. This is the winding that remains fixed in place while the core assembly and other components of the transformer are constructed. The series winding is crucial for the operation of the transformer, as it establishes the magnetic field necessary for transferring electrical energy between the primary and secondary windings.

Transformers typically consist of two main types of windings: the primary winding, which receives input voltage, and the secondary winding, which delivers output voltage. The series winding is involved in the determination of the voltage ratio and affects the overall impedance and characteristics of the transformer.

The other windings mentioned also play roles in transformer operation but do not qualify as stationary. For instance, the shunt winding is designed to provide additional functionality, such as stabilizing the voltage, and can be connected in parallel with the load. The neutral winding serves as a reference point in multi-phase systems and helps in balancing the currents. The load winding is designed to be used by the end-user and can thus change based on the load connected to the transformer.

Understanding the stationary nature of the series winding is crucial for comprehending how transformers operate, particularly in terms of energy transfer and the relationships between input and output voltage.